Before you buy that pricey engagement ring, necklace or bracelet, you may want to ensure that its quality is verified. This verification needs to be done in an objective 3rd party laboratory which describes the diamond based on its primary characteristics. This means you will receive a lab certificate or report describing what is known as the 4 Cs of diamond grading, i.e. clarity, cut, color and carat, as well as other relevant characteristics.
There’re various certifications and standards developed to evaluate the quality and characteristics of a diamond, but the most important one is the GIA certification.